Introduction to OOP Inheritance
In this video, you’ll learn how inheritance is used to write maintainable Python code that avoids redundancy.
Inheritance allows one class to subclass another. If we want to make the
Baby class a child class of the
Person class, we can define
Baby like this:
class Baby(Person): # Baby code here
By default, any
Baby object we create will inherit its attributes and methods from its parent. This means it will have the same attributes and members that the parent class defined.
In the video, you’ll see how you can override a method so that the
Baby class can contain a different implementation for that method. You’ll also learn how to extend the functionality of the
Baby class by defining new methods, which will be exclusive to only
isinstance() function is used to determine if an object is of a specific type. It takes 2 arguments: the object to be checked, and a type to check against. It supports inheritance, so in the example of our
isinstance(baby, Person) will return
True because our
Baby class is the child class of
Person, and so we can say our
baby object is a Person too.
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